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Large -Eddy Simulation Of The Effects Of Debris On Tornado Dynamics, Baiyun Gong
Large -Eddy Simulation Of The Effects Of Debris On Tornado Dynamics, Baiyun Gong
Graduate Theses, Dissertations, and Problem Reports
Tornadoes are one of the most intensely violent natural phenomena, which often bring considerable damage. Debris clouds are commonly observed along the tornado path. Studying tornadoes with debris is potentially important for several reasons: particle suspension may dramatically change the structure of the carrier flow; debris clouds represent one of the primary visual signatures of a tornado; large debris loadings can significantly enhance damage potential; differences between air and debris flow can complicate interpretation of Doppler radar measurements of velocity fields.;In earlier work, debris was added to an existing high-resolution LES model using a two-fluid Eulerian-Eulerian approach. The debris cloud …
Express Risk Assessment For The Dispersion Of Aerosols In An Urban Environment Using Probabilistic Implicit Tracking, Steven Lee Rowan
Express Risk Assessment For The Dispersion Of Aerosols In An Urban Environment Using Probabilistic Implicit Tracking, Steven Lee Rowan
Graduate Theses, Dissertations, and Problem Reports
The dispersion or transport of an airborne aerosol, whether the result of pollution or terrorist attack, is a topic of much interest to researchers and governmental officials in the United States. Due to this, there have been numerous efforts to develop accurate aerosol dispersion models utilizing computational fluid dynamics (CFD) and Lagrangian Particle Dynamics (LPD) in order to predict how an aerosol-suspended material will propagate in an urban environment. However, the complexity of these models require significant amounts of computational resources and are not practical for quickly modeling an actual event.;In this study, a stochastic simulation of Probabilistic Implicit Tracking …